Specific features of earth’s free oscillations after deep-focus sea of Okhotsk earthquake of May 24, 2013

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Abstract

A description of initial excitation of spheroidal mode 0S2 initiated by the 2013 Sea of Okhotsk earthquake (Mw= 8.3) is presented. It is based on newly revealed fact of standing P-wave origination in the epicenter of the Sea of Okhotsk earthquake and excitation of traveling surface P-waves on the Earth’s surface by this wave. A new interpretation of the nature of free spheroidal Earth’s oscillations in case of strong earthquake (М ≥7,5) is proposed. The spheroidal mode 0S2 is interpreted as combination of standing and traveling P-waves, transferring the Earth’s strain energy.

About the authors

I. P. Kuzin

P.P. Shirshov Institute of Oceanology of Russian Academy of Sciences

Author for correspondence.
Email: ivkuzin2013@yandex.ru
Russian Federation, 36, Nakhimovskii prospect, Moscow, 117997

L. I. Lobkovsky

P.P. Shirshov Institute of Oceanology of Russian Academy of Sciences

Email: ivkuzin2013@yandex.ru

Corresponding Member of the Russian Academy of Sciences

Russian Federation, 36, Nakhimovskii prospect, Moscow, 117997

K. A. Dozorova

P.P. Shirshov Institute of Oceanology of Russian Academy of Sciences

Email: ivkuzin2013@yandex.ru
Russian Federation, 36, Nakhimovskii prospect, Moscow, 117997

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